Steam-boiler



(No Model.) 2 Sheets-Sheet 1. H. A. R. DIETRIOH.

STEAM BOILER. No. 412,950. Patented Oct. 15, 1889.

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(No Model.)

2 Sheets-Sheet 2. H. A. R. DIBTRIGH.

STEAM BOILER.

No. 412,950. Patented Oct. 15, 1889.

IIVVENTOH WITNESSES." I

ATTORNEY UNITED STATES PATENT ()FFICE.

HARRY A. R. DIETRICH, OF SOUTH BETHLEH EM, PENNSYLVANIA,

-STEAM-BO|LER.

SPECIFICATION forming part of Letters Patent No. 412,950, dated October 15, 1889.

Application filed February 7, 1889- Serial No. 298,949. (No model.)

To all whom it may concern:

Be it known that I, HARRY A. R. DIE'IRICH, of South Bethlehem, in the county of Northampton and State of Pennsylvania, have invented a new and Improved Steam-B0iler, of which the following is a full, clear, and exact description.

My present invention relates to boilers of the class illustrated, described, and claimed in Letters Patent of the United States No.

395,268, granted to me on the th day of December, A. D. 1888-that is, to boilers designed. primarily to generate and superheat steam that is to be employed in circulatingpipes or radiators for heating purposes, the main object of the invention being to deliver the steam from the generating to the superheatingsection of the boiler in an extremely dry condition; in other words, to prevent any of the water contained in the generating-section of the boiler from entering the superheating-section in a liquid state.

To the end above named the invention consists, essentially, of a water-front, a generating-section arranged in connection with said water-front, a pipe or pipes leading upward from the water-front, and then downward to a steam-receiving chamber, and a superheatin section arranged in connection with said steam-receiving chamber, all as will be hereinafter more fully described, and specifically pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this-specification, in which similar figures and letters of reference indicate corresponding parts in both' views.

Figure 1 is a front view of the boiler, the casing and a portion of the water-front being shown in section; and Fig. 2 is a sectional view of the boiler, taken on line 0c 00 of Fig. 1. In the drawings above referred to I have represented my improved boiler as it appears when mounted within a casing or furnace 10, which is constructed to form a support for a water-front 11, a grate 12, and for elbows 13. The steam-generating section of the boiler consists, preferably, of a number of tubes 14,, 15, 16, 15, 16, and 17, the forward ends of the tubes 14 being in direct communication with the watenfront, as shown, while the rear ends of said tubes communicate with the tubes 15 through the medium of the elbows 13, the forward ends of the tubes 15 being placed in communication with the tubes 16 through the medium of elbows 13, this style of connection being maintained to establish communication between the tubes 14 and the tubes 17, the forward ends of said tubes 17 being placed in communication with the waterfront 11.

The parts above described constitute the steam-generating section of the boiler, above which section there is arranged a superheat ing-section made up of tubes 18, 19, 20, and 21, the two sections of the boiler being divided by a partition 22. If communication between the steam-containing portion a of the waterfront 11 and the superheating-section of the boiler were established directly, it is obvious that the steam would enter the superheatingsection of the boiler in a very damp condition; in other words, that water in a liquid form would enter such superheatingsection.

To prevent the entrance of water, as above set forth, I provide an npwardly extending pipe 30, which communicates with the steamcompartment a, said pipe being coupled to a horizontal section 31, which in turn is coupled with a downwardly extending section 32 by means of an arched coupling 33, the downwardly-extending pipe or tube 32 communicating with a chamber Z), with which the tubes 18 of the superheating section of the boiler also communicate. Thechamber b may be formed within a boX properly located, or it may be formed by dividing the upper portion of the water-front by means of a partition 25, this latter construction being the one which I prefer to employ.

In practice, I prefer to employ two or more connections between the chambers a and 12, two such connections being shown in the drawings, and in order that all water of condensation which might possibly form in the horizontal lengths 31 may be returned to the boiler I provide return-pipes 34, which lead downward to the return-pipes of the service, which are shown at 35, the pipes 34, however, being connected to the pipes 35 at a point between the water-front to which the pipes 35 lead, and the check-valves 36, which are,

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as usual, arranged in connection with the pipes 35.

The tubes of the superheating-section of the boiler may be arranged in any desired manner; but I prefer to connect them by means of elbows 26 and 27, as shown in the drawings, the tubes 21 leading to a steamdistributing main 28.

In operation, a circulation Within the boiler will be maintained, as indicated by the arrows, the steam passing from the chamber a through the pipes 30 to the pipes 31, thence through the arch-like coupling 33 to the pipes 32, to be delivered to the chamber b, and from said chamber to the superheating-section of the boiler, the arrangement being such that it is extremely unlikely that any water in a liquid form would enter the pipe 31; but should water enter such pipe in a liquid form it would still have to rise through the arched coupling 33 in order to find its way to the chamber 19, as will be readily understood, so that I provide for the delivery of extremely dry steam to the superheating-section of the boiler.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. In a boiler, the combination, with a water-front, of a tubular steam-generating section arranged in connection therewith, a pipe or tube leading upward from the steamspace of the water-front, and then downward to a steam-receiving chamber, and a superheating-section communicating with said steam-receiving chamber, substantially as described.

I 2. In a boiler, the combination, with a waterfront, of a tubular steam-generating section, a pipe or pipes leading upward from the steamspace of the water-front, horizontal pipes connected to the upwardlyextending pipes, arched connections which establish communication with the horizontal sections and downwardly-extending sections, said do'wnwardly-extending sections, and a superheating-section, with which the downwardly-extending sections communicate, substantially as described.

3. In a boiler, the combin ation,with a waterfront having compartments a and b, of upwardly and then downwardly extending pipes, by which said compartments are placedin communication, a steam-generating section arranged in connection with the water-front, and a steam-superheating section which communicates with the chamber 1) and with a steam-distributing pipe 28, substantially as described.

HARRY A. R. DIETRIOH. Witnesses:

SAMUEL BURGIS, WALTER LERCH. 

